Combine the ingredients to form the dough. In a large mixing bowl, whisk together the flour, remaining sugar, and salt. Make a well in the center of the dry mixture and pour in the frothy yeast mixture, eggs, egg yolks, vanilla extract, and orange zest.
Mix until the ingredients come together into a sticky dough. Gradually add softened butter, one tablespoon at a time, ensuring each addition is fully incorporated. Knead the dough for about ten minutes, either by hand or using a stand mixer with a dough hook attachment, until it becomes smooth and elastic. Avoid adding too much flour, as this can make the bread dense. Cover the dough with a clean kitchen towel and let it rise in a warm spot for one to two hours, or until it has doubled in size.
Discover how to spend five perfect days in Rome, exploring everything from the ancient wonders of the Colosseum and Roman Forum to the artistic treasures of Vatican City, the lively historic center, scenic viewpoints, and hidden neighborhoods like Trastevere. This itinerary helps first-time visitors experience the Eternal City in a balanced and unforgettable way.